You can't compare salvia with DMT. They both have a distinctly different effect on you. Also, there are over 200 derivations of DMT, with in them also a great variety of differend effects. From the 5 meo dmt to the nn dmt,... All in a different ballpark.
But, experiencing both, I'd say the nn dmt is by far the most effective, dissociative and psychedelic in the known realm.